Do girls really lose feeling for a guy if they don't talk for a while?

So I was like thank god everythings okay but just last week she told me she was gonna just break her phone and wait till she gets a new one and she said it could take a while and I tried to convince her not too but I guess she did cause I can't reach her anymore so school starts next week and Its been almost a week since I talked to her and I'm afraid what happend last time will happen again